Top roll for drawing mechanism



y 1959 o. w. SCHLUMS 2,884,665

' TOP ROLL FOR DRAWING MECHANISM Filed NOV. 18, 1955 Fig.5

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App mb 1 1955551$l N 541,7 9

1 claimcl. 191-14925;

This invention relates to top rolls for drawing mechanism, such as spinning and roving frames.

It is the general object of the invention to provide an anti-friction type top roll which is simple in construction, economical to manufacture, and very reliable in operatron. To the attainment of this general object, important features of the invention relate to the provision of an improved and rigid arbor and bearing construction; to improved provision for excluding dirt and lint from the bearings, and to provision for convenient lubrication of the rotated parts.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claim.

Preferred forms of the invention are shown in the drawings, in which Fig. 1 is a front elevation, partly in section, of a preferred form of the invention;

Fig. 2 is a similar view of a slightly modified construction;

Fig. 3 is a partial front elevation, partly in section, of a construction similar to Fig. 2 but designed for extra heavy duty;

Fig. 4 is a sectional end elevation, line 4-4 in Fig. 3;

Fig. 5 is a sectional front elevation of a top roll shell or cot;

Fig. 6 is a sectional front elevation of a bearing seal; and

Fig. 7 is a detail sectional view of a further modification.

Referring to Fig. 1, my improved top roll comprises an arbor 10 having projecting end portions 11 and 12 which coact with the usual recessed cap bars 14. At its middle portion 15 the arbor 10 may be knurled to firmly support a sleeve 16, which is adapted for engagement by any usual weight-applying device as 18. The arbor 10 and sleeve 16 are normally stationary.

A sleeve 20 is supported on balls 21 and 22 which are rotatable in spaced grooves 23 and 24 formed in the arbor 10. Any suitable covering or cot 27 may be secured to the outer surface of the sleeve 20 and may be formed of leather, rubber or other suitable cushioning material.

Metal plates or washers taken along the 30 are loosely mounted on the arbor 10 and abut the outer faces of the sets of balls 21 and 22. Felt washers 31 are provided between the washers 30 and similar metal plates or washers 33 are positioned outside of the felt washers and are engaged by a rubber sealing ring 34. This sealing ring may be of the type shown in Figs. 1 and 2, and is provided with an outer flange 35 adapted to be seated in a correspond ing groove 36 (Fig. 5) formed in the inner surface of the sleeve 20. The ring 34 also has concentric flexible sleeve portions engaging the arbor 10 and the sleeve 20 respectively.

The described sealing construction is provided at each aid transitive rashgan sta aaal, page.

tioned, axially of, the arbor 10 by the sealingring'sbut capable of very slight axial movement relativeathereto i xia 911 8 i ear vthe arbor-110;.- The; ap -1:38,, b-

'l e-xspac xs b w en t 2'tw 1s ries. fille aw rease. 1f nt s1ucet1t rou h 40- ans 1a d a P sa e-r4 ti scu endra he p s-1 a efetoen rsra s 249mm! th l totem-Pa r. tion 11 or 12 and adapted to receive a rubber plug 43 (Fig. 3) having an axial recess 44.

Lubricant may be supplied to fill the space S and to make up any loss by inserting the hollow needle of a suitable oiling device (not shown) through the rubber plug 43. After such insertion, oil or grease in a desired amount may be injected. When the needle is withdrawn, the opening in the plug 43 will be self-sealing.

The construction shown in Fig. 2 is very similar to that shown in Fig. 1, except that the center bearing sleeve 50 has a spherical middle portion 51, and that the sleeve 50 is adapted to be received in a slotted and recessed supporting member 52, which holds the roll from axial movement and from horizontal angular displacement but permits the roll to adjust itself slightly in a vertical plane.

This center bearing sleeve 50 and theassociated support 52 are not claimed herein but are included in the subject matter of a copending application of Ross B. Newton, Serial No. 547,616, filed Nov. 18, 1955.

With the type of roll shown in Fig. 2, the cap 52av at each outer end of the roll need not have the center opening for the arbor, but does have a small axial opening 55 to admit the end of the hollow needle of the oiling device. Otherwise the construction corresponds closely to the structure shown in Fig. 1. In both cases, the caps, as 38 or 52a, snap into slightly undercut recesses 57 (Fig. 5) at the ends of the sleeve 20.

In the construction shown in Fig. 3, a top roll is shown which is particularly adapted for very heavy duty, and in which the parts are larger and of more rigid construction than as shown in Figs. 1 and 2.

In Fig. 3, the top roll comprises a sleeve 60 supported by balls 61 on a normally stationary arbor 62 having a central recess 63 to receive any usual weighting device 64. The usual cot or outer shell 66 is mounted on the sleeve 60. A metal washer 70 at the outside of each series of balls 61 is engaged on its outer surface by a felt washer 72.

The rubber sealing ring 74 may be of the cross section shown in Fig. 6, and has a flange 75 to be received in a groove 76 in the inner face of the sleeve 60. The inner lip 77 of the ring 74 has rubbing contact with the surface of the arbor 62, and the inner face 78 of the ring abuts the felt washer 72. Caps 80 land 81 are provided at the outer and inner ends of each sleeve 60 and are of the general construction and utility previously described.

In Fig. 7, I have shown a slightly modified sealing construction in which the sealing ring omits the outer flange shown in Fig. 6 and is slidably inserted inside of roll member or sleeve 91. The sealing ring 90 axially locates a felt washer 92 and metal washer 93 and is itself held in axial position by a snap ring or washer 95, inserted in a suitable groove or recess 96 in the end portion of the sleeve 91.

My improved roll construction as above described provides very efficient anti-friction bearings which are effectively sealed to preclude the entrance of dirt or lint or other foreign matter to the bearings. Provision is also made for convenient replenishment of lubricating grease or oil without any chance of the lubricant escaping from was. antaxia p sa e.

the roll and getting onto the outer surfaces thereof. The seals not'only provide eflicient dust-excluding features, but also cushion any end thrust of the shells which may occur.

Havingthus described my invention and the advantages, thereof, 1 do not wish to be lirnited to the details herein disclosed, otherwise than "as set forth in the claim} but what I claim is: 1

I In a top roll, an arbor, a 'sleeve rotatably mounted on said arbor and having a smooth inner cylindrical surface. and having an annular internal groove near each end, ball bearings within said sleeve and between said grooves, end washer units loose on said arbor and axially engaging the balls in said bearings, and a sealing ring looseon said arbor at each end of said sleeve, each sealing ring having an external flanged portion at one end of said ring fitting one of the grooves in said sleeve and having an axially p oj n e r Portion al' ibcq irem, s i flanged portion and mounted in rubbing relation to the periphery of said arbor, and each ring-having also an in-- ner end surface positioned to'abut and seal the outer surface of an adjacent washer unit on said arbor.

References Cited in the file of this patent UNITED STATES .iPATENTS 

